Description
The Selank 10mg vial is a laboratory reference material and nothing else. The compound is a synthetic heptapeptide analog of a tuftsin fragment. Fill weights of 10 mg and 30 mg are offered here, chosen before you order. Appearance is white to off-white, sealed under vacuum, with the lot number printed on the label. It is not a food, not a drug, and not for human or veterinary consumption.
The label on the Selank 10mg vial carries the compound, the fill weight and the lot number, and that is the extent of it.
What is in the Selank 10mg vial
Everything that can honestly be said about the Selank 10mg vial before the certificate is opened is listed below.
| Specification | As supplied |
|---|---|
| Compound | Selank |
| Vial content | 10 mg or 30 mg, chosen on this listing |
| Form | Lyophilized, white to off-white, sealed under vacuum |
| Sequence length | Seven residues |
| Purity | HPLC, percent of total peak area |
| Identity | Mass spectrometry against expected mass |
| Water | Karl Fischer titration, percent by weight |
| Documentation | Independent certificate of analysis, tied to the lot number |
| Price basis | Per milligram figure shown against each strength |
| Supplied for | Laboratory research use only, not for human or veterinary consumption |
Why it is a powder, and what a milligram of the Selank 10mg vial costs
What sits in the vial is a freeze dried solid. Removing water by sublimation rather than evaporation keeps the peptide out of the temperature range where it would start to fall apart, and it leaves a solid that can sit on a shelf. Residual moisture is what is left of the process, and it is measured rather than assumed. The figure appears on the certificate as a percentage by weight. Nothing about the Selank 10mg vial is sold by volume.
Doing the division
Milligram content is the unit the Selank 10mg vial is sold in, because it is the only figure that makes two listings comparable. This listing has more than one strength, so the arithmetic has to be done per option: take the price of the option and divide it by its milligram content. The result is printed under each price. It is the number that makes two vial sizes, and two vendors, comparable at all. Compare the Selank 10mg vial on that basis rather than on the price of the glass. The case is made at greater length in why price per milligram beats the price on the bottle.
The certificate of analysis for the Selank 10mg vial
Each lot has its own certificate and the document is tied to the lot number printed on the vial label. On it you will find the analysis date, the HPLC purity figure together with the chromatogram, the mass spectrometry identity comparison, the Karl Fischer water result, and the issuing laboratory. Those seven items are the specification. Everything else on a vendor page is commentary. The certificate issued with the Selank 10mg vial is specific to the lot and not to the product line.
Assays are run by an outside contract laboratory rather than in house. Independence of that kind matters, and it has a limit: the figure still depends on the sample that was submitted, which is why lot by lot testing rather than periodic testing is the part that matters. Stock is withdrawn from sale where the certificate for the Selank 10mg vial does not support the figures here. See how to read a certificate of analysis and why we publish the batch that failed.
What the methods actually measure
Identity rests on the mass spectrum. An ionised sample is measured for mass to charge, and the figure is compared with the calculated mass of the named sequence. Keep it separate from the purity line in your head. One tells you the proportion of the main component, the other tells you whether the main component is the molecule you ordered. The same methods are run on the Selank 10mg vial as on every other lot on this shelf, and formulae and expected masses for compounds of this class can be checked through the FDA drugs section.
Names, abbreviations and how to keep the Selank 10mg vial
One compound, several names, is the normal condition here. Internal codes outlive the laboratories that issued them, INCI numbers get reassigned, and nothing in a product title resolves any of it. Where an abbreviation expands into a statement about what a compound does, the abbreviation is what appears here, in the title, the web address, the image description and the text alike. The catalogue name carried by this vial is the one the trade uses, and a trade name is not an identifier.
Keep the vial sealed, cold and dark. Lyophilized material of this class is normally held at 2 to 8 degrees Celsius for short periods and at minus 20 degrees Celsius or below for longer ones, and the window for the lot is on this listing. Keep the certificate with the vial, since the lot number is the only thing joining the two.
Research use only, stated plainly
Supplied for in vitro and laboratory research by qualified purchasers. It is not a drug, not a dietary supplement, not a cosmetic and not approved for human or animal use. No dosing figure, administration route, timing, injection site or reconstitution procedure appears on this page, and none will be supplied on request. Those omissions are deliberate rather than accidental. No part of this page describes a use for this material in a person or an animal. Bacteriostatic water, sterile diluents and syringes are stocked separately rather than sold as a set with the vial.
The limits of that sentence need stating. A research use only line describes what is sold, it is not a shield, and the enforcement record shows whole product pages being read rather than disclaimers alone. See research use only is not a legal strategy.
The certificate for the lot in stock is linked above, including where a lot did not pass its own stated figures. There is nothing else to read into this listing beyond the figures on it. This item sits on the nootropic shelf, inside the research peptide catalogue, and every certificate we hold is on the lab results page.
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